Energy head implications of the installation of circular flap gates on drainage outfalls

作者：Roger Burrows, J. Emmonds · 发表于：Journal of Hydraulic Research · 年份：1988 · DOI：10.1080/00221688809499221 · 被引用次数：7 · 研究领域：Water Systems and Optimization、Urban Stormwater Management Solutions、Hydraulic flow and structures

A programme of experimental study on simple circular single hinged flap gates is reported. Energy losses resulting from the flow constriction created are found to be largely dependent upon the flowrate and the gate's self weight when subjected to a tailwater surcharge. Guidance on gate selection and head loss implications in the literature is sparse and design curves are therefore presented here to partially fill this gap. These show that the total energy loss at the outfall resulting from the use of heavy gates can be more than double the kinetic energy head of the pipe flow, representing the normal pipe “exit” losses.